#All perishable items in the store have EVEN barcodes. Write a program that 
#first reads the number of items in the store. The, the program reads the 
#barcode (integer number) for each item and its price (floating number). 
#The program finds the number of PERISHABLE items that cost under 2 dollars and 
#their average price. In addition, the program finds the number of 
#PERISHABLE items in the store and the number of NON-PERISHABLE items in 
#the store. 

#Solution 2 Using Loop while

size=int(input("number of items in the store "))
total_under2=0
count_per_under2=0
count_per=0
count_nonper=0
i=0
while(i<size):
	i=i+1
	barcode=int(input("enter barcode "))
	price=float(input("enter price "))
	if(barcode%2==0):#this checks that barcode is an even number
		count_per=count_per+1
		if(price<2):
			total_under2=total_under2+price
			count_per_under2=count_per_under2+1
	else:
		count_nonper=count_nonper+1
print("# of perishables", count_per)
print("# of non-perishable", count_nonper)
if(count_per_under2>0):
	print(count_per_under2, "perishable under 2 dollars")
	print("their average", total_under2/count_per_under2)
else:
	print("no perishable items under 2 dollars")